Motor vehicle



Dec. 4, 1934. H. s.` EBERHARD MOTOR VEHICLE Filed DSG. 8, 1930 2 Sheets-Sheet 1 M nlm Q W n MN A Wi* QQ m, .5 s ON NNI QM a k wml H QM I ww wmv w W Re n n vm r mm ;w u IJ m uw. m. l w. Kw w. un n, n, g R, WM. l Wm IQ Q N\ Q T Il A NN myV/m. Il WM. 5 U m un.. s n wh QQ 4V g r 7 7 /f M9 \Q\ l lm NS Q 'm llHIHH SQ Dc. 4, 1934. H. s. l-:Esx-:Rl-IARDv MOTOR VEHICLE Filed Dec. 8, 1930 2 Sheets-Sheetl 2 INVENTOR Ha//ffa/fEber//afd TTRNEYsf Patented Dec. 4, 1934 Moron VEHICLE Harmon S. Eberhard, San Leandro, Calif., as-

signor to Caterpillar Tractor Co., San Leandro, Calif., a corporation of California Application December 8, 1930, Serial N0. 500,849 20 Claims. (Cl. 'I4- 11) My invention relates to motor vehicles and parteeth 76 with which engage teeth 77 cut in the ticularly to tractors, and the objects of my invenlower portion of operating shaft 78 which extends tion are: first, to providea tractor with a power upwardly through apertured boss 100 in case 10.

. take-off device; second, to provide a tractor with The upper end of shaft 78 is reduced in diameter a power take-01T device particularly designed for as shown at 101 to pass through an aperture in 60 attachment to the tractor transmission. plate 102 which is removably attached by screws 103 to case 10. Where shaft '78 projects outside Desmptwn of figures of plate 102, it has operating lever 79 pinned Fig. lis a longitudinal section through the rear thereto. Shift .rod 75 is mounted in sleeve 80 l0 portion of a motor vehicle. which is supported at 81 in frame 54 and is formed 65 Fig. 2 is a rear elevation. at 82, as shown in Fig. 3, to provide a housing Fig. 3 is a section on line 3-3 in Fig. 1. and support for spring-pressed plunger 83 having head 84 adapted to seat either in'groove 85 or groove 86 to position pinion 69 either in the inop- My power take-off as disclosed in the drawings erative position shown in Fig. 1 where head 84 is 70 is particularly designed for attachment to a moseated in groove 85, or in operative position with tor vehicle of the tractor type, the transmission pinion 69 in mesh with gear 87. case of which is shown at 10. Inthe forward Gear 8'7 is keyed at 88 to shaft 89 which is supcompartment 11 is the usual change speed transported at its forward end 90 in anti-friction bearmission gearing comprising shiftable gears 12,13, ing 91 in frame 54 and intermediate its ends at 75 14, mounted on splined shaft 15 and adapted to 92 in anti-friction-bearings 93 in mounting plate be engaged with gears 16, 17, 18, respectively, ony 55. At its rear end 94, shaft 89 is splined for the shaft 19, on the rear end of which is mounted attachment of power transmission mechanism. bevel pinion 20 which engages with a bevel gear Cover plate 66 is provided with an apertured on a transverse shaft not shown for driving the boss 107 through which shaft 89 projects and the 80 traction devices on either side of the tractor. portion of shaft 89 which passes through boss 107 Shaft 15 has splined end 21 which projects rearis threaded at 95 in such a manner that during wardly through housing partition 22. To this operation of the shaft, any lubricant which atsplined end 21, shaft 50 of the power take-off tempts to escape from the casing around shaft 89 attachment is adapted to be coupled, and for this is fed back by screw thread 95. In addition, boss 85 purpose forward end of shaft 50 is splined at 51 10'7 has an outwardly projecting flange 96 'With so that the shafts may be telescopically coupled which a complemental part 97 Secured t0 Shaft 89 together as shown in Fig 1 by sleeve 52 which is cooperates to further prevent escape of lubricant internally splined. Shaft 50 is mounted in antiaround shaft 89. To retain bearings 53 and 91 friction bearings 53 in a frame 54 which is fasin place in frame 54. aretainer p1ate98 is attached 90 teneri to mounting plate 55 by studs 56, 57, 58, 59, t0 the rear face 0f frame 54 as shown in Fig. 3 by which are threaded into frame 54 and pass cap screws 99. Cover plate 66 serves to retain through apertures in mounting plate 55 to receive bearings 70 and 93 in place Il mounting plate 55- nuts as shown in Fig. 2. Mounting plate 55 is To remove the device from the tractor, screws secured to the rear end of case 10 by means of 103 are removed so that shaft 78 can be lifted to 95 studs 60, 61, 62, 63, 64, 65, which are threaded disengage teeth 7'7 from teeth 76 and the nuts into case 10 and pass through apertures in mountare removed from studs 60-65 so that frame 54 ing plate 55 and are provided with nuts as shown and mounting Plate 55 With the mechanism aS- in Fig. 2. Mounting plate 55 is provided with an sembled therein can be withdrawn as a unit from aperture which is covered by cover plate 66. the rear end 0f the traet01,al1d it Will readily ap- 100 Dome-like portions 67 and 68 are formed in cover pear how the device is installed in the tractor. plate 66 to give clearance to studs 58, 59. The I, therefore, claim as my invention: rearward end of shaft is mounted in anti-fric- 1. In a motor vehicle, a transmission housing, tion bearing 70 in mounting plate 55. a plate xedly attachable thereto, and a plurality 50 A portion of shaft 50 intermediate its bearings of power transmitting shafts journaled in said 105 is splined and pinion 69 is slidably mounted thereplate and extending into said transmission houson. Pinion 69 is provided with grooved collar ing, one of said shafts being a power take-off 71 t0 receive arm '72 having hub 73 pinned at 74 shaft extending outwardly from said plate and to the rearward end of shift rod 75, the forward said housing,

end of which is cut onone side to form rack 2. In a motor vehicle, a transmission housing 110 y Description. of mechanism having an aperture therein, a plate adapted to be xedly fastened over said aperture, a frame entirely supported by said plate and adapted to extend into said housing, and a` power take-off shaft journaled in said plate and in said frame.

3. In a motor vehicle, a transmission housing,

a plate adapted to be fixed thereto, a frame seframe, a driving gear slidably mounted on said shaft, a second shaft journaled in said plate and in said frame, a driven gear fastened thereto, and means selectively operable to engage and disengage said gears.

5. In a motor vehicle, a transmission housing, a power take-off unit attachable therein, compris- -ing a mounting plate, a frame attached thereto,

a splined shaft journaled in said plate and in said frame, a driving gear slidably mounted on said shaft, a second shaft journaled in said plate and in said frame, a driven gear fastened thereto, and means selectively operable to engage and disengage said gears, comprising a shifting means for said slidable gear slidably mounted in said frame.

6. In a motor vehicle, a transmission housing, Ia power take-off unit attachable therein, comprising a mounting plate, a frame attached thereto, a splined shaft journaled in said plate and in said frame, a driving. gear slidably mounted on said shaft, a second shaft journaled in said plate and in said frame, a driven gear fastened thereto, and means selectively operable to engage and disengage said gears, comprising a shift rod slidably -mounted in said frame, and a member attached thereto for operating said gear, and means to shift said rod, having a portion outside said transmission housing equipped with operating means.

'7. In a motor vehicle, a transmission mechanism, a housing therefor, including an aperture, a plate for attachment to said housing over said aperture, a frame entirely supported by said plate including a portion spaced from said plate, a shaft journaled in said plate and in said spaced frame portion and extending through said plate to provide a power take-off, a second shaft journaled in said spaced frame portion and in said plate and connected to said transmission mechanism, means operable to connect and disconnect said shafts, and operating mechanism therefor, including a third shaft mounted in said spaced frame portion, movement of said third shaft controlling the connection between said first two shafts.

8. In a motor vehicle, a transmission mechanism, a housing therefor, having two apertures, a plate for attachment to said housing over one of said apertures, a frame entirely supported by said plate including a portion spaced from said plate, a shaft journaled in said plate and in said spaced frame portion and extending through said plate to provide a power take-off, a second shaft journaled in said spaced frame portion and in said plate and connected to said transmission mechanism, a gear on .said first shaft, a second gear on said second shaft, a device for moving one of said gears into and out of mesh with the other of said gears, including a third shaft mounted in said spaced frame portion, and

a member inserted into said housing through the other of said apertures therein for operative connection with said third shaft.

9. In a motor vehicle, a transmission housing having an aperture, and a power take-off unit attachable to said housing and adapted to cover said aperture; said power take-off unit comprisin'g a plate, a frame attached thereto, a splined shaft adapted vto be connected to said transmission and journaled in said plate and in said frame, a driving gear slidably mounted on said shaft, a power take-off shaft journaled in said plate and in said frame, a driven gear fastened thereto, and means including a shift rod slidably mounted in said unit for selectively engaging and disengaging said gears.

10. In a motor vehicle, a transmission housing having an aperture, and a powery take-off unit attachable to said housing and adapted to cover said aperture; said power take-off unit comprising a plate, a frame attached thereto and providing a space between it and the plate; a splined shaft adapted to be connected to said transmission and journaled in said plate and in said frame, a driving gear slidably mounted on said shaft in the space between said frame and plate, a power take-off shaft extending outwardly of the unit and journaled in said plate and in said frame in spaced relationship to said splined shaft, a driven gear fastened to said power take-off shaft in said space and adapted to mesh with the slidably mounted gear, and means including a member slidably mounted in said unit for selectively engaging and disengaging said gears.

l1. In a motor vehicle, a housing, change speed transmission mechanism in said housing for transmitting powerfrom the engine to the traction devices of the vehicle, including a plurality of coaxial gears, a shaft coaxial with said gears, and a power take-off unit attached to said housing, comprising a plate, a plurality of shafts, bearings for said shafts in said plate, a frame, bearings for' said last mentioned shafts in said frame, means to secure said frame to said plate, so that said bearings are in alignment to support said last mentioned shafts, said last mentioned shafts having shoulders abutting said bearings to prevent axial displacement of said last mentioned shafts with respect to said power take-off unit, and means for attaching said unit to said housing after said last mentioned shafts have been assembled therein, so that an end of one of said last mentioned shafts is in position for connection to said transmission shaft on the side of the gears coaxial therewith remote from the engine.

12. In a motor vehicle, a housing, power-driven mechanism in said housing, said housing having an aperture therein, a power take-off unit attached to said housing and covering said aperture, comprising two parallel shafts having overlapping portions, one of said shafts extending into said housing for connection to said powerdriven mechanism, the other of said shafts extending outside said housing for power take-off purposes, and gears on the overlapping portions of said shafts adapted to be intermeshed for transmitting power from one shaft to the other.

13. In a motor vehicle, a housing, power-driven mechanism in said housing, said housing having an aperture therein, a power take-off unit attached to said housing and covering said aperture, comprising two parallel shafts having overlapping portions, one of said shafts extending into said housing for connection to said powerdriven mechanism, the other of said shafts extending outside said housing for power take-off purposes, and gears on the overlapping portions of said shafts adapted to be intermeshed for transmitting power from one shaft to the other, and a third shaft parallel to said first two shafts operable to move one of said gears into and out of mesh with another of said gears.

14.. In a motor vehicle, a housing, power-driven mechanism in said housing, said housing having an aperture therein, a power take-off unit attached to said housing and covering said aperture, comprising two parallel shafts having overlapping portions, one of said shafts extending into said housing for connection to said power-driven mechanism, the other of said shaftsA extending outside said housing for power take-off purposes, and gears on the overlapping portions of said shafts adapted to be intermeshed for transmitting power from one shaft to the other, said gears being located inside said housing when said power take-off unit is attached thereto.

15. In a motor vehicle, a housing, having an aperture therein, power-driven mechanism in said housing, a cover for said aperture attached to said housing, power take-off mechanism mounted on said cover and removable therewith as a unit, comprising a shaft extending into said housing for connection with said power-driven mechanism, a second shaft extending outside said cover for power take-off purposes, means to transmit power from said first shaft to said second shaft, and a device to control the operation of said power transmitting means, including a third shaft, the axes of said first and third shafts passing through said aperture in said housing.

16. In a motor vehicle, a housing, having an aperture therein power-driven mechanism in said housing, a cover for said aperture attached to said housing, power take-off mechanism mounted upon said cover and removable as a unit therewith, comprising a shaft extending into said housing for connection with said power-driven mechanism, another shaft extending outside said cover for power take-off purposes, and means to transmit power from said rst shaft to said second shaft, the axes of said shafts being non-coincident and passing through said aperture in said housing.

17. In a motor vehicle, a housing having two aperturestherein, one of said apertures being in the top of said housing and the other being in a wall of said housing, power-driven mechanism in said housing, a cover for said aperture in the wall of said housing, power take-off mechanism mounted on said cover and removable therewith as a unit, comprising a shaft extending into said 'housing for connection with said power-driven mechanism, a shaft extending outside of said cover for power take-off purposes, means to transmit power from said first shaft to said second shaft, and control means therefor, including a rigid member, a cover for said aperture in the top of said housing, and a device mounted on said latter cover and removable therewith as a unit said device being operable by the operator of said vehicle for actuating said control means and including a rigid member extending into said housing for cooperation with said first-mentioned rigid member in said control means.

18. In a motor vehicle, a housing having a plurality of apertures therein, one of said apertures being in one wall of said housing and another of said apertures being in another wall of said housing disposed transversely with respect to said rst mentioned wall, power-driven mechanism in said housing, a cover for one of said apertures, power take-off mechanism mounted on said cover and removable therewith as a unit, comprising a shaft extending into said housing for connection with said power-driven mechanism, a second shaft extending outside of said cover for power takeoff purposes, means to transmit power from said first shaft to said second shaft, and control means therefor, including a rigid member mounted on said cover and extending toward said other aperture, a second cover for said other aperture, and a device mounted on said second cover and removable therewith as a unit, said device being operable by the operator of said vehicle for actuating said control means and including a rigid member extending into said housing for cooperation with said control means.

19. In a motor vehicle, a transmission housing having a transmission gear compartment and another compartment at the rear of said gear ,compartment, said gear compartment enclosing a power-driven shaft projecting into said other compartment, said other compartment having an aperture in the rear wall thereof, a power take-off unit detachably connected as a unit to said other compartment and covering said aperture, comprising parallel shafts having overlapping portions one of said shafts extending into said other compartment for connection with said powerdriven shaft, another of said shafts extending outside said other compartment for power takeoff purposes, gears on the overlapping portions of said shafts adapted to be intermeshed for transmitting power from one shaft to the other, and means including a control member operable to effect meshing and demeshing of said gears.

20. In a motor vehicle, a housing having a plurality of walls extending transversely with respect to each other, one of said walls having an aperture therein and another of said walls having a second aperture therein; power-driven mechanism in said housing; covering means for said first-mentioned aperture; power take-off mechanism supported by said covering means and removable therewith as a unit, comprising a shaft having an end portion positioned within said housing for connection with said power-driven mechanism, a second shaft extending outside of said covering means for power take-olf purposes, means to transmit power from said first-mentioned shaft to said second shaft, and control means therefor including a rigid member supported by said covering means and extending toward said second aperture; second covering means for said second aperture; and a device mounted on said second covering means and removable therewith as a unit, said device being operable by the operator of said vehicle for actuating said control means and including a rigid member having an end portion within said housing for cooperation with said control means.

' HARMON S. 

